More 'proper' way to compare with null

boards/static/js/main.js

@@ -1,93 +1,93 b''
 /*
  @licstart  The following is the entire license notice for the
  JavaScript code in this page.
 
 
  Copyright (C) 2013  neko259
 
  The JavaScript code in this page is free software: you can
  redistribute it and/or modify it under the terms of the GNU
  General Public License (GNU GPL) as published by the Free Software
  Foundation, either version 3 of the License, or (at your option)
  any later version.  The code is distributed WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE.  See the GNU GPL for more details.
 
  As additional permission under GNU GPL version 3 section 7, you
  may distribute non-source (e.g., minimized or compacted) forms of
  that code without the copy of the GNU GPL normally required by
  section 4, provided you include this license notice and a URL
  through which recipients can access the Corresponding Source.
 
  @licend  The above is the entire license notice
  for the JavaScript code in this page.
  */
 
 var LOCALE = window.navigator.language;
 var FORMATTER = new Intl.DateTimeFormat(
     LOCALE,
     {
         weekday: 'short', year: 'numeric', month: 'short', day: 'numeric',
         hour: 'numeric', minute: '2-digit', second: '2-digit'
     }
 );
 
 /**
  * An email is a hidden file to prevent spam bots from posting. It has to be
  * hidden.
  */
 function hideEmailFromForm() {
     $('.form-email').parent().parent().hide();
 }
 
 /**
  * Highlight code blocks with code highlighter
  */
 function highlightCode(node) {
     node.find('pre code').each(function(i, e) {
         hljs.highlightBlock(e);
     });
 }
 
 /**
  * Translate timestamps to local ones for all <time> tags inside node.
  */
 function translate_time(node) {
     var elements;
 
-    if (node == null) {
+    if (node === null) {
         elements = $('time');
     } else {
         elements = node.find('time');
     }
 
     if (!elements.length) {
         return;
     }
 
     elements.each(function() {
         var element = $(this);
         var dateAttr = element.attr('datetime');
         if (dateAttr) {
             var date = new Date(dateAttr);
             element.text(FORMATTER.format(date));
         }
     });
 }
 
 $( document ).ready(function() {
     hideEmailFromForm();
 
     $("a[href='#top']").click(function() {
         $("html, body").animate({ scrollTop: 0 }, "slow");
         return false;
     });
 
     addImgPreview();
 
     addRefLinkPreview();
 
     highlightCode($(document));
 
     translate_time(null);
 });